How does the pollen travel?Bees or other pollinating insects
were the most likely carriers. Plum pollen is not carried far by wind.

What other plants could be pollinated by HoneySweet? Since
HoneySweet is in the species Prunus domestica and as such has six sets of
chromosomes, while most other stone fruits and wild Prunus species have only
two sets, crossbreeding is highly unlikely. There are no reports of natural
hybrids of P. domestica. Even in breeding programs where great efforts are
made, it is difficult to produce fertile hybrids with this species. Therefore,
cross pollination with other stone fruit and wild Prunus is unlikely.